Bought springs over a year ago lost pieces

A quick learner from Montville,NJ says:
December 5, 2015
I am looking for an identical piece I am holding. It is approximately 2.1 cm by 3.1 cm. The large center hole is approx 2 cm. I also need the piece in the sash to hold the axle. Please help. THanks again.

I bought the springs from you over a year ago and am finally getting around to repairing and now I cant find the pieces.
User submitted photos of a window balance.
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Tom from SWISCO responded:
December 7, 2015
Thanks for posting! Please start by looking at our 15-192 pivot shoe. This actually may be all you need, but if you need the other parts as well then see our 15-156 cover and either our Series 170 or Series 171 coil springs.
CertainTeed Lance Spring Cover, Wide
CertainTeed Lance Spring Cover, Wide
15-156
$1.97
CertainTeed Pivot Shoe
CertainTeed Pivot Shoe
15-192
$6.39
SWISCO S170 and S171 Coil Balance Assembly
SWISCO S170 and S171 Coil Balance Assembly
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